package main

import (
	"fmt"
	"unicode/utf8"
)

func main() {
	tip1 := "hello world"
	tip2 := "你好"
	tip3 := "亢龙有悔，nihao"
	fmt.Println(len(tip1))
	fmt.Println(len(tip2))
	fmt.Println(utf8.RuneCountInString(tip3))
}
